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From c1cf80738219dbd70cba0c0c1244698aad842ec7 Mon Sep 17 00:00:00 2001
From: Steffen Jaeckel <s@jaeckel.eu>
Date: Thu, 5 Mar 2020 13:57:07 +0100
Subject: [PATCH] introduce MP_HAS_SET_DOUBLE
---
demo/test.c | 4 ++--
mp_set_double.c | 2 +-
tommath_private.h | 7 +++++++
3 files changed, 10 insertions(+), 3 deletions(-)
--- demo/test.c.orig 2019-10-22 09:44:44.000000000 +0000
+++ demo/test.c 2021-09-20 10:02:00.103699000 +0000
@@ -625,7 +625,7 @@
}
-#if defined(__STDC_IEC_559__) || defined(__GCC_IEC_559)
+#if defined(MP_HAS_SET_DOUBLE)
static int test_mp_set_double(void)
{
int i;
@@ -2461,7 +2461,7 @@
T1(mp_read_write_sbin, MP_TO_SBIN),
T1(mp_reduce_2k, MP_REDUCE_2K),
T1(mp_reduce_2k_l, MP_REDUCE_2K_L),
-#if defined(__STDC_IEC_559__) || defined(__GCC_IEC_559)
+#if defined(MP_HAS_SET_DOUBLE)
T1(mp_set_double, MP_SET_DOUBLE),
#endif
T1(mp_signed_rsh, MP_SIGNED_RSH),
--- bn_mp_set_double.c.orig 2019-10-22 09:44:44.000000000 +0000
+++ bn_mp_set_double.c 2021-09-20 10:05:36.466235000 +0000
@@ -3,7 +3,7 @@
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
-#if defined(__STDC_IEC_559__) || defined(__GCC_IEC_559)
+#if defined(MP_HAS_SET_DOUBLE)
mp_err mp_set_double(mp_int *a, double b)
{
uint64_t frac;
--- tommath_private.h.orig
+++ tommath_private.h
@@ -164,6 +164,13 @@ MP_STATIC_ASSERT(prec_geq_min_prec, MP_DEFAULT_DIGIT_COUNT >= MP_MIN_DIGIT_COUNT
*/
#define MP_MAX_DIGIT_COUNT ((INT_MAX - 2) / MP_DIGIT_BIT)
+#if defined(__STDC_IEC_559__) || defined(__GCC_IEC_559) \
+ || defined(__x86_64__) || defined(_M_X64) || defined(_M_AMD64) \
+ || defined(__i386__) || defined(_M_X86) \
+ || defined(__aarch64__) || defined(__arm__)
+#define MP_HAS_SET_DOUBLE
+#endif
+
/* random number source */
extern MP_PRIVATE mp_err(*s_mp_rand_source)(void *out, size_t size);
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